Lenovo USB3 Dock Ethernet Not Working After Upgrading to 7.6

Wim · 11-18-2014, 02:36 PM

Hi

I've checked the logs and they do show what I expected. Every 3-4 seconds there is a message from the firmware:

Ethernet: Auto-negotiation failed - retrying

So the hardware cannot negotiate a link speed. The auto neg state is just read from the hardware so there is no bug to fix here. Either the network hub/switch is not advertising a speed we can support (eh half duplex modes only) or there is an Ethernet fault on your dock which was masked previously by us still establishing a link when half duplex modes were advertised.

Either way, I don't think this is a firmware bug, as we look to be correctly not bringing up a link because auto negotiation has failed.

Wim

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11-18-2014, 02:36 PM	#7
Wim Senior Member Join Date: Feb 2009 Posts: 1,561	Hi I've checked the logs and they do show what I expected. Every 3-4 seconds there is a message from the firmware: Ethernet: Auto-negotiation failed - retrying So the hardware cannot negotiate a link speed. The auto neg state is just read from the hardware so there is no bug to fix here. Either the network hub/switch is not advertising a speed we can support (eh half duplex modes only) or there is an Ethernet fault on your dock which was masked previously by us still establishing a link when half duplex modes were advertised. Either way, I don't think this is a firmware bug, as we look to be correctly not bringing up a link because auto negotiation has failed. Wim